duel, affaire d'honneur -- (a prearranged fight with deadly weapons by two people (accompanied by seconds) in order to settle a quarrel over a point of honor)
duel -- (any struggle between two skillful opponents (individuals or groups))
Overview of verb duel
The verb duel has 1 sense
duel -- (fight a duel, as over one's honor or a woman; "In the 19th century, men often dueled over small matters")